Dental Journal (Majalah Kedokteran Gigi)

Number 1, 2015

1-6
Trans-adapted, reliability, and validity of children fear survey schedule-dental subscale in Bahasa Indonesia

Authors: Arlette Suzy, Julian Amriwijaya and Efi fitriana

Abstract

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Background:The most frequently used measuring instrument for determination ofdental fear in children nowadays is the children’s fear survey schedule-dental scale (CFSS-DS). Purpose:The purpose ofthis study was to explore the reliability and validity ofthe scale with Indonesian trans adapted version of the scale, thus the scale can be reliable to be used in other similar research in Indonesia. Methods: Total of 113 participants, who were parent’s 3 to 12 years old children. Children were divided into two age groups, group I 3-6 year old (83 children and group II 7-12 year old (30 children). Eighty three children from the first group were divided into first dental visit group (30 children) and non first dental visit group (53 children). Test-retest approach was applied to 30 first dental visit children aged 3-6 year old. Original scale was translated to Indonesian language. result:The result showed the high value of the Cronbach’s coefficient ofinternal consistency α=0.956. Three factors were extracted by screen test method with Eigen values higher than 1, which explained 93.05% variance of results. Conclusion: CFSS-DS scale is reliable and valid psychometric instrument for dental fear evaluation in children in Bahasa Indonesia. The differences between this study and those of others may appear due to many factors.

7-11
Effect of casein phosphopeptide-amorphous calcium phosphate on the flexural strength of enamel-dentin complex following extracoronal bleaching

Authors: Diatri Nari Ratih and Hendargo Agung Pribadi

Abstract

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Background: Bleaching can affect the mechanical properties of enamel-dentin complex, such as flexural strength. Casein phosphopeptide-amorphus calcium phosphate (CPP-ACP) is often used following bleaching treatment to reduce hypersensitivity and to increase demineralization of tooth. Purpose: The purpose of the study was to investigate the effect of CPP-ACP on the flexural strength ofenamel-dentin complex following extracoronal bleaching. Methods:Forty-eight enamel-dentin plates (size 8 x 2 x 3 mm) were randomly assigned into 6 groups, each consisted of8 samples. Group 1, no bleaching and immersed in artificial saliva. Group 2, no bleaching, CPP-ACP application only. Group 3, bleaching using 15% carbamide peroxide. Group 4, similar to group 3, except application ofCPP-ACP for the times between bleaching. Group 5, bleaching with 40% hydrogen peroxide. Group 6, similar to group 5, except application ofCPP-ACP for the times between bleaching. Flexural strength ofeach enamel-dentin plate was tested by threepoint bending test using universal testing machine. results: The results showed that 15% carbamide peroxide and 40% hydrogen peroxide significantly reduced flexural strength ofenamel-dentin (216.25±26.44 MPa and 206.67±32.07 MPa respectively). Conversely, application ofCPP-ACP following both bleachings increased flexural strength (266.75± 28.27MPa and 254.58±36.59 MPa respectively). A two-way Anova revealed that extracoronal bleaching agents significantly reduced flexural strength (p<0.05), while application of CPP-ACP significantly increased flexural strength ofbleached enamel-dentin complex (p<0.05). Conclusion:Extracoronal bleaching agents reduce flexural strength, whereas application of CPP-ACP following bleaching either with 15% carbamide peroxide or 40% hydrogen peroxide can increase the flexural strength ofenamel-dentin complex.